Schaefer's Stainless Steel Bow Chocks provide a smooth lead for your mooring or dock lines. Schaefer's unique desing features a narrow jaw to keep lines in place, a deep opening to accept chafe gear and a thick base to keep lines off of your deck. The generous radius edges reduce chafe to a minimun. Combine this with Schaefer's unique hidden Metric fastener design and a brilliant electropolished 316 Stainless Steel finish for strength and beauty.